Philadelphia Land Cover 2018
Identification_Information:
Citation:
Citation_Information:
Originator:University of Vermont Spatial Analysis Laboratory
Publication_Date:2018
Title:
Philadelphia Land Cover 2018
Geospatial_Data_Presentation_Form:remote-sensing image
Online_Linkage: http://www.pasda.psu.edu
Description:
Abstract: 
The City of Philadelphia has migrated metadata for this data set to the City-wide Metadata Catalog. For any questions about the migration and administration of the Metadata Catalog, please contact maps@phila.gov. To view the metadata for this layer, please visit: http://metadata.phila.gov/#home/datasetdetails/5e32fe6927a32c0018b07da1
Purpose: 
This dataset was developed as part of the Philadelphia 2018 Tree Canopy Assessment. As such, it represents a 'top down' mapping perspective in which tree canopy over hanging other features is assigned to the tree canopy class. At the time of its creation this dataset represents the most detailed and accurate land cover dataset for the area. High resolution land cover dataset for Philadelphia,Pennsylvania. Seven land cover classes were mapped: (1) tree canopy, (2) grass/shrub, (3) bare earth, (4) water, (5) buildings, (6) roads, and (7) other paved surfaces. The primary sources used to derive this land cover layer were 2018 LiDAR data and 2017 NAIP imagery. Ancillary data sources included GIS data provided by Philadelphia,Pennsylvania or created by the UVM Spatial Analysis Laboratory. Object-based image analysis techniques (OBIA) were employed to extract land cover information using the best available remotely sensed and vector GIS datasets. OBIA systems work by grouping pixels into meaningful objects based on their spectral and spatial properties, while taking into account boundaries imposed by existing vector datasets. Within the OBIA environment a rule-based expert system was designed to effectively mimic the process of manual image analysis by incorporating the elements of image interpretation (color/tone, texture, pattern, location, size, and shape) into the classification process. A series of morphological procedures were employed to insure that the end product is both accurate and cartographically pleasing. Following the automated OBIA mapping a detailed manual review of the dataset was carried out at a scale of 1:3500 and all observable errors were corrected. The information was created by University of Vermont Spatial Analysis Laboratory in collaboration with Philadelphia 2018 Tree Canopy Assessment.
Supplemental_Information: 
This assessment was completed by the University of Vermont's Spatial Analysis Laboratory with funding the City of Philadelphia. The methods used were developed by the University of Vermont Spatial Analysis Laboratory with funding from the City of Philadelphia. Tree canopy assessments have been conducted for numerous communities throughout the U.S. where the results have been instrumental in helping to establishing tree canopy goals.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2018
Status:
Progress:Complete
Maintenance_and_Update_Frequency:None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:-75.340162
East_Bounding_Coordinate:-74.941280
North_Bounding_Coordinate:40.153055
South_Bounding_Coordinate:39.811058
Keywords:
Theme:
Theme_Keyword_Thesaurus:None
Theme_Keyword:tree canopy
Theme_Keyword:Urban
Theme_Keyword:UTC
Theme_Keyword:Land cover
Theme:
Theme_Keyword_Thesaurus:ISO 19115 Topic Categories
Theme_Keyword:imageryBaseMapsEarthCover
Place:
Place_Keyword_Thesaurus:None
Place_Keyword:Philadelphia
Place_Keyword:Philadelphia
Place_Keyword:Pennsylvania
Temporal:
Temporal_Keyword_Thesaurus:None
Temporal_Keyword:2018
Access_Constraints:None
Use_Constraints: 
The City of Philadelphia reserves all rights in the City's databases and any data contained therein, and the end user’s use of the data does not constitute a transfer of, nor does the end user receive, any title or interest in the database or any other City data. The City of Philadelphia makes no representation about the accuracy of any specific information in this data and is provided “as is” and without Warranty of any kind. The user of this data will assume complete responsibility for any and all occurrences resulting from its use or display and will hold the City of Philadelphia harmless from any and all claims, demands, liabilities, obligations, damages, suits, judgments or settlements, including reasonable costs and attorneys' fees, that arise from use of this data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:University of Vermont Spatial Analysis Laboratory
Contact_Person:Jarlath O'Neil-Dunne
Contact_Position:Director
Contact_Address:
Address_Type:mailing and physical address
Address: 
Aiken Room 205
Address: 
81 Carrigan Drive
City:Burlington
State_or_Province:VT
Postal_Code:05405
Country:US
Contact_Voice_Telephone:802-656-3324
Contact_Facsimile_Telephone:802-656-8683
Contact_Electronic_Mail_Address:joneildu@uvm.edu
Data_Set_Credit: 
University of Vermont Spatial Analysis Laboratory in collaboration with Philadelphia 2018 Tree Canopy Assessment.
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.4.0.5524
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: 
No accuracy assessment was conducted, but the dataset was subject to a thorough manual quality control (QC). Accuracy assessments from previous UTC land cover datasets indicate that the use OBIA techniques in combination with a detailed QC yield an overall accuracy of 95% or better.
Logical_Consistency_Report: 
Valid raster dataset.
Completeness_Report: 
Complete coverage for the study area using the most recent boundary data.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Title:
Planimetric data
Type_of_Source_Media:None
Source_Citation_Abbreviation:
Planimetric data
Source_Contribution: 
Vector
Source_Information:
Source_Citation:
Citation_Information:
Title:
National Agricultural Imagery Program 4-band data
Source_Scale_Denominator:12000
Type_of_Source_Media:None
Source_Citation_Abbreviation:
NAIP
Source_Information:
Source_Citation:
Citation_Information:
Title:
LiDAR
Type_of_Source_Media:None
Source_Citation_Abbreviation:
LiDAR
Process_Step:
Process_Description: 
Object based image analysis (OBIA) using a rule-based expert system
Process_Step:
Process_Description: 
Manual corrections to land cover classification
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method:Raster
Raster_Object_Information:
Raster_Object_Type:Pixel
Row_Count:0
Column_Count:0
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Lambert_Conformal_Conic:
Standard_Parallel:39.93333333333333
Standard_Parallel:40.96666666666667
Longitude_of_Central_Meridian:-77.75
Latitude_of_Projection_Origin:39.33333333333334
False_Easting:1968500.0
False_Northing:0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method:coordinate pair
Coordinate_Representation:
Abscissa_Resolution:0.000000026907964745248598
Ordinate_Resolution:0.000000026907964745248598
Planar_Distance_Units:foot_us
Geodetic_Model:
Horizontal_Datum_Name:D North American 1983
Ellipsoid_Name:GRS 1980
Semi-major_Axis:6378137.0
Denominator_of_Flattening_Ratio:298.257222101
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label:landcover_2018_philadelphia
Entity_Type_Definition:
UTC
Attribute:
Attribute_Label:OBJECTID
Attribute_Definition: 
Internal feature number.
Attribute_Definition_Source: 
Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label:Count
Attribute_Definition: 
# pixels per land cover class
Attribute_Definition_Source: 
Internal
Attribute:
Attribute_Label:Value
Attribute_Definition: 
Land cover code
Attribute_Definition_Source: 
UTC
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:2
Enumerated_Domain_Value_Definition: 
Grass/Shrub
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: 
Road/Railroad
Enumerated_Domain:
Enumerated_Domain_Value:5
Enumerated_Domain_Value_Definition: 
Building
Enumerated_Domain:
Enumerated_Domain_Value:4
Enumerated_Domain_Value_Definition: 
Water
Enumerated_Domain:
Enumerated_Domain_Value:7
Enumerated_Domain_Value_Definition: 
Other Paved Surfaces
Enumerated_Domain:
Enumerated_Domain_Value:3
Enumerated_Domain_Value_Definition: 
Bare Soil
Enumerated_Domain:
Enumerated_Domain_Value:1
Enumerated_Domain_Value_Definition: 
Tree Canopy
Overview_Description:
Entity_and_Attribute_Overview: 
Seven land cover classes were mapped: (1) tree canopy, (2) grass/shrub, (3) bare earth, (4) water, (5) buildings, (6) roads/railroads, and (7) other paved surfaces.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Pennsylvania Spatial Data Access (PASDA)
Contact_Address:
Address_Type:mailing and physical address
Address: 
115 Land and Water Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:(814) 865 8792
Contact_Electronic_Mail_Address:pasda@psu.edu
Distribution_Liability: 
The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.
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Metadata_Reference_Information:
Metadata_Date:20200204
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:University of Vermont Spatial Analysis Laboratory
Contact_Person:Jarlath O'Neil-Dunne
Contact_Position:Director
Contact_Address:
Address_Type:mailing and physical address
Address: 
81 Carrigan Drive
Address: 
Aiken Center Room 205
City:Burlington
State_or_Province:VT
Postal_Code:05405
Country:US
Contact_Voice_Telephone:802-656-3324
Contact_Facsimile_Telephone:802-656-8683
Contact_Electronic_Mail_Address:joneildu@uvm.edu
Metadata_Standard_Name:FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version:FGDC-STD-001-1998
Metadata_Time_Convention:local time
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